.youhuibox{
    width: 100vw;
    height: 100vh;
    background-color: #f2f5f7;
}
.youhui{
    width: 90%;
    height: 60px;
    background-color: #fff;
    margin: 0 auto;
    margin-top: 20px;
    .youhuizuo{
        width: 50%;
        height: 60px;
        line-height: 60px;
        text-align: center;
        float: left;
    }
    .youhuiyou{
        width: 50%;
        height: 60px;
        line-height: 60px;
        float: right;
       span{
         float:right;
         margin-right: 20px;
       }
    }
}